ASTM D7267-06
(Test Method)Standard Test Method for Edge Ravel Resistance of Finished Loop Pile, Pile Yarn Floor Covering
Standard Test Method for Edge Ravel Resistance of Finished Loop Pile, Pile Yarn Floor Covering
SIGNIFICANCE AND USE
The satisfactory performance of a loop pile floor covering depends, to a considerable extent, on the installation and maintenance of the product. A loop pile floor covering with inadequate edge ravel strength may result in loops pulling out from the backing, resulting in an aesthetically displeasing appearance. Tuft rows located at the seam of a loop pile floor covering are the most susceptible to raveling.
SCOPE
1.1 This test method covers the determination of the force required to ravel a yarn from the edge of a loop pile, tufted, carpet.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7267 − 06
StandardTest Method for
Edge Ravel Resistance of Finished Loop Pile, Pile Yarn
Floor Covering
This standard is issued under the fixed designation D7267; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Summary of Test Method
1.1 This test method covers the determination of the force 4.1 A yarn end is raveled from a loop pile floor covering
required to ravel a yarn from the edge of a loop pile, tufted, using a tensile testing machine. The force required to pull the
carpet. tufted yarn from the edge of a tufted loop pile floor covering is
measured and recorded. The required load or force to remove
1.2 This standard does not purport to address all of the
the yarn from the specimen is calculated and defined as “edge
safety concerns, if any, associated with its use. It is the
ravel strength.”
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Significance and Use
bility of regulatory limitations prior to use.
5.1 The satisfactory performance of a loop pile floor cover-
2. Referenced Documents
ing depends, to a considerable extent, on the installation and
maintenance of the product. A loop pile floor covering with
2.1 ASTM Standards:
inadequate edge ravel strength may result in loops pulling out
D76 Specification for Tensile Testing Machines for Textiles
from the backing, resulting in an aesthetically displeasing
D123 Terminology Relating to Textiles
appearance. Tuft rows located at the seam of a loop pile floor
D1776 Practice for Conditioning and Testing Textiles
covering are the most susceptible to raveling.
D2904 Practice for Interlaboratory Testing of a Textile Test
Method that Produces Normally Distributed Data (With-
6. Apparatus
drawn 2008)
6.1 Tensile Testing Machine—A constant-rate-of extension
D2906 Practice for Statements on Precision and Bias for
(CRE) type conforming to Specification D76, a constant rate of
Textiles (Withdrawn 2008)
speed of 300 6 10 mm/min (12 6 0.5 in. /min) is required.
D5684 Terminology Relating to Pile Floor Coverings
Full-scale loads rang from 0.545 to 4.53 kg (1 to 10 lb) are
3. Terminology
generally adequate. A constant rate of traverse (CRT) type
tensile testing machine conforming to the Specification D76
3.1 For definitions of terms relating to pile floor coverings,
and operated at the same speed is permitted. There may be no
refer to Terminology D5684.
overall correlation with CRE-type and CRT-type testing ma-
3.2 Thefollowingtermsarerelevanttothisstandard:carpet,
chines. Consequently, the two machines cannot be used inter-
constant-rate-of-extension, finished, finished pile yarn floor
changeably. In the case of controversy, the CRE-type testing
covering, floor covering, loop pile yarn floor covering, pile,
machine shall prevail.
pile yarn floor covering, textile floor covering, tuft, tuft leg,
6.2 Clamps and Jaw Faces—The use of hydraulic or
tufted fabric, edge ravel.
pneumatic, serrated or padded face, clamping systems with a
3.3 For definition of other terms related to textiles, refer to
minimum of 25 by 75 mm (1 by 3 in.) are recommended to
Terminology D123.
reduce specimen slippage. The faces shall be parallel and have
matching centers with respect to one another (in the same
This test method is under the jurisdiction ofASTM Committee D13 on Textiles clamp) and to the corresponding jaw face of the other clamp.
and is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.
Current edition approved June 1, 2006. Published July 2006. DOI: 10.1520/
7. Sampling, Test Specimens, and Test Units
D7267-06.
7.1 Lot Sample—When performing acceptance testing for a
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
sample lot, take at random the number of rolls or pieces of pile
Standards volume information, refer to the standard’s Document Summary page on
yarn floor covering as directed on an applicable material
the ASTM website.
specification or other agreement between the purchaser and the
The last approved version of this historical standard is referenced on
www.astm.org. supplier. Consider the rolls or pieces of pile yarn floor covering
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7267 − 06
FIG. 1 Photograph of Trimming the Edge of a Pulled Tufted Row of Yarn
FIG. 2 Photograph of Edge Ravel Specimen Ready for Testing
to be the primary sampling units. In the absence of such 7.5 Specimen Sampling and Labeling—Obtain specimens,
agreement, take one roll or piece from the lot to be tested. representing a broad distribution along the length and width of
eachlaboratorysampleunit.Takeonespecimenneareachedge
7.2 Laboratory Sample—For acceptance testing, take a
of the sampling unit but, no nearer the edge than 5 % of the
“laboratory sampling unit” that is a minimum of 460 mm (18
width, and take one specimen from the center area. Ensure that
in.) in the machine direction by full width (cross machine
specimens are free of folds, creases or wrinkles. Label to
direction) from each roll or piece in the lot sample.
maintain specimen identity.
7.3 Test Specimens—From each laboratory sample unit, cut
7.6 Preparation of Specimens—With hemostats or like
three specimens with the longer direction parallel to the
device,graspayarnendthatisneartotheedgeofthespecimen
machine direction. Consider the long dimension as the direc-
and that can be pulled the entire specimen length. Remove the
tion of the test.
entire tufted row of yarn from the specimen.
7.4 Specimen Dimension—Cut the specimens to a width/
length dimension of 50 by 150 mm 62mm(2by6in. 6 0.1 7.7 With scissors or knife remove the void backing area
in.), respectively. (created by removing the tufted row of yarn in 7.6), See Fig. 1.
D7267 − 06
7.8 Grasp the yarn from the tufted row next to the area 11.3 Using the values from the three specimens of the
trimmed from in 7.7, and pull the yarn
...
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